7
Over cooling drains your battery
When the ambient temperature is between 70° and 90° F, keep the thermostat at the “3“ position
to avoid an excessive drain of the battery. When making ice, or storing frozen foods, turn the
thermostat to the coldest setting “5“.
Check the Battery Charge Level
If the DC voltage to the refrigerator is less than 10.7 volts, the cooling performance of the refrigera-
tor will immediately decrease. Make sure that the battery is fully charged.
A fully charged battery will have a specific gravity reading of between 1.260 and 1.280. The battery
voltage is best indicated when the refrigerator is “ON” and the battery charging system is “OFF”.
Charge the battery when the specific gravity reading is less than 1.200.
CAUTION:
- Never use a battery charger, an AC/DC converter, a rectifier, or etc. instead of a battery
to operate the refrigerator on DC power. These electrical devices cause high ripples or
surge voltages which can damage the refrigerator.
- Never use a commercial inverter or converter to operate the refrigerator on AC power.
These electrical devices do not hold the constant frequency that is necessary for the
refrigerator.
- Only use a “quick charger” on the battery if the thermostat control is turned to “OFF”. If
a “quick charger” is used on the battery while the thermostat control is “ON”, damage
to the refrigerator can occur.
Install the Lifting Handles
(Models MRFT40 and MRFT60 only)
Lifting handles are packed inside the refrigerator.
Using the screw provided, install the lifting handles on
the ends of the refrigerator as shown.
Connect the Power Supply
This refrigerator operates on either 120 volts (60 hertz) AC current in your home or 12/24 volts
DC current from a battery in your car, boat, trailer, camper, etc. If both power supplies are
available, the refrigerator will select and operate on AC voltage. If an AC power supply
becomes unavailable, the refrigerator will switch operation to DC voltage.
